The announcement was made at PromCon, the project’s dedicated conference being held in Munich this week. According to Chris Aniszczyk, CTO and COO at CNCF, a graduated project reflects the overall maturity where it has reached a tipping point in terms of diversity of contribution, community and adoption.

For Prometheus that means 20 active maintainers, more than 1,000 contributors and more than 13,000 commits. Its contributors include the likes of DigitalOcean, Weaveworks, ShowMax and Uber.

CNCF projects start in the sandbox, move onto incubation and finally to graduation. To achieve graduation level, they need to adopt the CNCF Code of Conduct, have passed an independent security audit and defined a community governance structure. Finally it needs to show an “ongoing commitment to code quality and security best practices,” according to the organization.

Aniszczyk says the tool consists of a time series database combined with a query language that lets developers search for issues or anomalies in their system and get analytics back based on their queries. Not surprisingly, it is especially well suited to containers.

Like Kubernetes, the project that became Prometheus has its roots inside Google. Google was one of the first companies to work with containers and developed Borg (the Kubernetes predecessor) and Borgmon (the Prometheus predecessor). While Borg’s job was to manage container orchestration, Borgmon’s job was to monitor the process and give engineers feedback and insight into what was happening to the containers as they moved through their lifecycle.

While its roots go back to Borgmon, Prometheus as we know it today was developed by a couple of former Google engineers at SoundCloud in 2012. It joined Kubernetes as the second CNCF project in May 2016, and appropriately is the second graduate.

The Cloud Native Computing Foundation’s role in all of this to help promote cloud native computing, the notion that you can manage your infrastructure wherever it lives in a common way, greatly reducing the complexity of managing on-prem and cloud resources. It is part of the Linux Foundation and boasts some of the biggest names in tech as members.